Unfortunately all but the second one has 7200 rpm hard disk which is quite important in addition to the graphics card. I believe you should try and get a 5870 card with a 7200rpm hard disk customized if you can.

well, the thing is that here in india there isn't much room for customizations in laptops. after a long search i find these 3 suitable to my budget and expectations. so, if you could just rate them on their graphic performance , it'll b great help.cheers...

hehehe.... well i actually don't know that. hmmm..thnks a lot bro for your advice. so are you sure that this HD5870 with this i5 processor is good enough to play games in coming future(atleast in 2011) without any hitches? and 1 more thing though, do you think that without switchable graphics,this GX660 will eat up battery faster, as other 2 models have switchable integrated graphics coz of i7 processor but this one has i5. i've heard that without switchable graphics battery consumption is much more.